Samsung SSD 990 EVO Plus 2TB SSD Review

We used CrystalDiskMark 8‘s custom settings to test the 4K random write performance of the drive through a range of queue depths. The setup for the tests is listed below.

Transfer Request Size: 4KB, Outstanding I/O: 1-32

The best result we saw from our 4K random write results was 294,019 IOPS at QD16 before the performance dropped back at QD32 at 293.838 IOPS, both of these figures are nowhere near the official maximum of 1,350,000 IOPS.

4K Random Write v QD compared.

The best performance from the drive came at QD2 where it sits just inside the top 10. For the remaining tested queue depths the drive sits in the bottom half of the results chart.

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